follow these procedure for any android phone.
Requires Pc or laptop, ADB and fastboot knowledge and your time.
1. Root your phone. install a custom recovery. search on google for tutorials.
2.do a backup of your current rom. go to recovery > backup
3.find suitable rom and put it on your sd card.
4. go to recovery and update zip from card and select rom.
4. now it will flash new rom. delete dalvik cache and cache partition.
1. it will void your warranty.
2. can brick your phone.